/* ===================================
   RETRO POS SYSTEM - CSS STYLES
   Vintage aesthetic with modern functionality
   =================================== */

/* CSS Variables - Retro Color Palette */
:root {
    /* Retro Warm Colors */
    --primary: #D2691E;
    --primary-dark: #A0522D;
    --primary-light: #F4A460;
    
    --secondary: #CD853F;
    --accent: #FF8C42;
    --accent-dark: #FF6B35;
    
    /* Neutral Retro Tones */
    --bg-main: #FFF8DC;
    --bg-secondary: #FAEBD7;
    --bg-card: #FFFAF0;
    --bg-dark: #8B4513;
    
    /* Text Colors */
    --text-primary: #3E2723;
    --text-secondary: #5D4037;
    --text-light: #8D6E63;
    --text-white: #FFFEF7;
    
    /* Status Colors */
    --success: #6B8E23;
    --warning: #DAA520;
    --danger: #CD5C5C;
    --info: #4682B4;
    
    /* Borders & Shadows */
    --border: #D2B48C;
    --shadow: rgba(139, 69, 19, 0.15);
    --shadow-hover: rgba(139, 69, 19, 0.25);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Courier New', 'Courier', monospace;
    background: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Georgia', serif;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--text-white);
    padding: var(--spacing-lg) var(--spacing-xl);
    box-shadow: 0 4px 12px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 4px solid var(--accent);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1600px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo i {
    width: 40px;
    height: 40px;
    stroke-width: 2;
}

.logo h1 {
    color: var(--text-white);
    font-size: 2rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.header-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.date-time {
    font-size: 1rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.btn-icon {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--text-white);
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.btn-icon i {
    width: 24px;
    height: 24px;
}

/* Container Layout */
.container {
    display: flex;
    max-width: 1600px;
    margin: 0 auto;
    min-height: calc(100vh - 100px);
}

/* Sidebar */
.sidebar {
    width: 240px;
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-right: 3px solid var(--border);
    box-shadow: 4px 0 12px var(--shadow);
}

.nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    font-family: 'Courier New', monospace;
}

.nav-btn i {
    width: 20px;
    height: 20px;
    stroke-width: 2.5;
}

.nav-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--text-white);
    transform: translateX(5px);
}

.nav-btn.active {
    background: var(--primary);
    border-color: var(--primary-dark);
    color: var(--text-white);
    box-shadow: 0 4px 8px var(--shadow);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: var(--spacing-xl);
    background: var(--bg-main);
}

.view {
    display: none;
}

.view.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* View Header */
.view-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 3px solid var(--border);
}

.view-header h2 {
    color: var(--primary-dark);
    text-shadow: 1px 1px 2px var(--shadow);
}

/* POS Layout */
.pos-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-xl);
    height: calc(100vh - 200px);
}

.pos-left {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.pos-right {
    background: var(--bg-card);
    border: 3px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 24px var(--shadow);
}

/* Search Bar */
.search-bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--bg-card);
    border: 3px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: 0 4px 12px var(--shadow);
}

.search-bar i {
    width: 24px;
    height: 24px;
    color: var(--text-secondary);
}

.search-bar input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 1rem;
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    outline: none;
}

.search-bar input::placeholder {
    color: var(--text-light);
}

.btn-scan {
    background: var(--accent);
    color: var(--text-white);
    border: 2px solid var(--accent-dark);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition);
    font-family: 'Courier New', monospace;
}

.btn-scan:hover {
    background: var(--accent-dark);
    transform: scale(1.05);
}

.btn-scan i {
    width: 20px;
    height: 20px;
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--spacing-md);
    overflow-y: auto;
    padding: var(--spacing-sm);
    max-height: calc(100vh - 320px);
}

.product-card {
    background: var(--bg-card);
    border: 3px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    box-shadow: 0 2px 8px var(--shadow);
}

.product-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 6px 16px var(--shadow-hover);
}

.product-card i {
    width: 48px;
    height: 48px;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.product-card h4 {
    font-size: 0.95rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.product-card .price {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-dark);
}

.product-card .stock {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: var(--spacing-xs);
}

/* Cart */
.cart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border);
}

.cart-header h2 {
    font-size: 1.5rem;
    color: var(--primary-dark);
}

.btn-clear {
    background: var(--danger);
    color: var(--text-white);
    border: 2px solid #B22222;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition);
    font-family: 'Courier New', monospace;
}

.btn-clear:hover {
    background: #B22222;
    transform: scale(1.05);
}

.btn-clear i {
    width: 18px;
    height: 18px;
}

.cart-items {
    flex: 1;
    overflow-y: auto;
    margin-bottom: var(--spacing-lg);
}

.empty-cart {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 200px;
    color: var(--text-light);
}

.empty-cart i {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.cart-item {
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-item-info h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
}

.cart-item-info .price {
    color: var(--accent-dark);
    font-weight: 600;
}

.cart-item-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.qty-btn {
    background: var(--primary);
    color: var(--text-white);
    border: none;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.qty-btn:hover {
    background: var(--primary-dark);
}

.qty-btn i {
    width: 16px;
    height: 16px;
}

.qty-display {
    min-width: 40px;
    text-align: center;
    font-weight: 700;
    font-size: 1.1rem;
}

.btn-remove {
    background: var(--danger);
    color: var(--text-white);
    border: none;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    margin-left: var(--spacing-sm);
}

.btn-remove:hover {
    background: #B22222;
}

.btn-remove i {
    width: 16px;
    height: 16px;
}

/* Cart Summary */
.cart-summary {
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.summary-row.total {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--border);
    margin-top: var(--spacing-md);
}

.btn-checkout {
    width: 100%;
    background: var(--success);
    color: var(--text-white);
    border: 3px solid #556B2F;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    transition: var(--transition);
    font-family: 'Georgia', serif;
    box-shadow: 0 4px 12px var(--shadow);
}

.btn-checkout:hover {
    background: #556B2F;
    transform: scale(1.02);
}

.btn-checkout i {
    width: 28px;
    height: 28px;
}

/* Buttons */
.btn-primary, .btn-secondary {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition);
    font-family: 'Courier New', monospace;
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-white);
    border: 2px solid var(--primary-dark);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--primary);
}

.btn-primary i, .btn-secondary i {
    width: 20px;
    height: 20px;
}

/* Tables */
.table-container {
    background: var(--bg-card);
    border: 3px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 12px var(--shadow);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead {
    background: var(--primary);
    color: var(--text-white);
}

.data-table th {
    padding: var(--spacing-lg);
    text-align: left;
    font-weight: 700;
    font-size: 1rem;
    border-bottom: 3px solid var(--primary-dark);
}

.data-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border);
}

.data-table tbody tr {
    transition: var(--transition);
}

.data-table tbody tr:hover {
    background: var(--bg-secondary);
}

.table-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-table {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.btn-table:hover {
    background: var(--bg-secondary);
}

.btn-table i {
    width: 20px;
    height: 20px;
}

.btn-table.edit i {
    color: var(--info);
}

.btn-table.delete i {
    color: var(--danger);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--bg-card);
    border: 3px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    box-shadow: 0 4px 12px var(--shadow);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px var(--shadow-hover);
}

.stat-card i {
    width: 48px;
    height: 48px;
    color: var(--primary);
}

.stat-info h3 {
    font-size: 2rem;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-xs);
}

.stat-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Status Badges */
.status-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-badge.in-stock {
    background: #90EE90;
    color: var(--success);
}

.status-badge.low-stock {
    background: #FFE4B5;
    color: var(--warning);
}

.status-badge.out-of-stock {
    background: #FFB6C1;
    color: var(--danger);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(62, 39, 35, 0.7);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: var(--bg-card);
    border: 4px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-content.receipt-modal {
    max-width: 400px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border);
}

.modal-header h3 {
    color: var(--primary-dark);
}

.btn-close {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.btn-close:hover {
    background: var(--bg-secondary);
}

.btn-close i {
    width: 24px;
    height: 24px;
    color: var(--text-secondary);
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: 'Courier New', monospace;
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(210, 105, 30, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    margin-top: var(--spacing-xl);
}

/* Select Input */
.select-input {
    padding: var(--spacing-md);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: 'Courier New', monospace;
    background: var(--bg-card);
    color: var(--text-primary);
    cursor: pointer;
}

.filter-group {
    display: flex;
    gap: var(--spacing-md);
}

/* Checkout Modal */
.checkout-summary {
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.checkout-summary .summary-row.large {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-dark);
}

.payment-methods {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.payment-btn {
    background: var(--bg-secondary);
    border: 3px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl) var(--spacing-md);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    transition: var(--transition);
    font-family: 'Courier New', monospace;
    font-weight: 600;
}

.payment-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    transform: scale(1.05);
}

.payment-btn i {
    width: 48px;
    height: 48px;
    color: var(--primary);
}

/* Receipt */
.receipt {
    background: white;
    padding: var(--spacing-xl);
    border: 2px dashed var(--border);
    border-radius: var(--radius-md);
    font-family: 'Courier New', monospace;
    color: #000;
}

.receipt-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px dashed #ccc;
}

.receipt-header h2 {
    color: #000;
    margin-bottom: var(--spacing-sm);
}

.receipt-info {
    font-size: 0.9rem;
    color: #666;
}

.receipt-items {
    margin-bottom: var(--spacing-lg);
}

.receipt-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

.receipt-total {
    border-top: 2px dashed #ccc;
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.receipt-total .receipt-item {
    font-weight: 700;
    font-size: 1.1rem;
}

.receipt-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 2px dashed #ccc;
    font-size: 0.9rem;
    color: #666;
}

/* Scanner Modal */
.scanner-container {
    text-align: center;
    padding: var(--spacing-xl);
}

.scanner-input {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--bg-secondary);
    border: 3px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.scanner-input i {
    width: 48px;
    height: 48px;
    color: var(--primary);
}

.scanner-input input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 1.5rem;
    font-family: 'Courier New', monospace;
    color: var(--text-primary);
    outline: none;
    text-align: center;
}

.scanner-hint {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Chart Container */
.chart-container {
    background: var(--bg-card);
    border: 3px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    box-shadow: 0 4px 12px var(--shadow);
}

.chart-container h3 {
    margin-bottom: var(--spacing-lg);
    color: var(--primary-dark);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: var(--radius-md);
    border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .pos-layout {
        grid-template-columns: 1fr;
    }
    
    .pos-right {
        max-height: 600px;
    }
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 3px solid var(--border);
    }
    
    .nav {
        flex-direction: row;
        overflow-x: auto;
    }
    
    .nav-btn {
        white-space: nowrap;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .payment-methods {
        grid-template-columns: 1fr;
    }
}

/* Print Styles */
@media print {
    body * {
        visibility: hidden;
    }
    
    .receipt, .receipt * {
        visibility: visible;
    }
    
    .receipt {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
    }
}